Wal-Mart heiress Christy Walton topped the list with a $36.7 billion fortune, followed by L’Oreal heiress Liliane Bettencourt with a net worth of $34.5 billion. The third richest woman went to fellow Walton family member Alice Walton, Jacqueline Mars of Mars candy company grabbed fourth and mining heiress Gina Rinehart rounded out the top five with a $17.7 fortune.